hibernate3 annotation 的实例 3 (one to many) http://bigcat.easymorse.com/?p=249 在EJB3.0 规范中 多对一与一对多的双向关系, 多对一(就是@ManyToOne注解的这端,是多端哦 不要搞混了)这端总是双向关联端的主题(owner)端, 而一对多端的关联注解为 @OneToMany(mappedBy=
Test.java packagecom.fancy.test;importjava.util.Iterator;importjava.util.Set;importorg.hibernate.Session;importorg.hibernate.SessionFactory;importorg.hibernate.cfg.AnnotationConfiguration;importorg.hibernate.cfg.Configuration;importcom.fancy.po.Company;importcom.fancy.po.Employee;/*** --- * @文件...
Today we will look into One To Many Mapping in Hibernate. We will look into Hibernate One To Many Mapping example using Annotation and XML configuration. One To Many Mapping in Hibernate In simple terms, one to many mapping means that one row in a table can be mapped to multiple rows in...
This quick Hibernate tutorial will take us through an example of a one-to-many mapping using JPA annotations, an alternative to XML. We’ll also learn what bidirectional relationships are, how they can create inconsistencies, and how the idea of ownership can help. Further reading: Spring ...
hibernate one to many(many to one) 多对一维护的关系是:多指向一的关系,有了此关系,加载多的时候可以将一加载上来 一对多维护的关系是:一指向多的关系,有了此关系,在加载一的时候可以将多加载上来 而单向一对多关联映射是在一的一端维护关系的 1.实体类: 2.映射文件: (1)由 Nation来维护关联: Nation...
基于maven构建的hibernate mysql demo。 基于xml、annotation的hibernate demo:其中包含one-to-one、one-to-many、many-to-many映射关系的配置。独立的测试用例。 内容如下: one-to-one: xml/annotation。 one-to-many: xml/annotation。 many-to-many: xml/annotation。 many-to-many "join table extra column...
The best way to model a one-to-many relationship in hibernate I have been working with hibernate for quite some time and I’ve realized thatthe best way to model a one-to-many relationship is to use just@ManyToOneannotation on the child entity. ...
hibernate annotation 双向 one-to-one 注解 环境：Hibernate 3.3.1 Maven 3.0.4 MySQL 5.5.13 Myeclipse 8.6.1 建表语句：DROP TABLE IF EXISTS `t_card`;CREATE TABLE `t_card` ( `cardId` int(10) unsigned NOT NULL AUTO_INCREMENT, `cardNumber` char(18) NOT NULL, PRIMARY KEY...
Hibernate关系映射 一对一双向外键关联@OneToOne Annotation方式 双向关联和单向关联的区别 首先还是来构造一个实际应用的场景,比如实体类车辆(Car),它具有以下属性:Id,品牌(brand),车牌(lisencePlate);实体类车牌(LisencePlate),它具有以下属性:Id,号码(number),所属车辆(car)。那么车辆和车牌是一对一的关系,一辆...
Hibernate关系映射 一对一双向外键关联@OneToOne Annotation方式 双向关联和单向关联的区别 首先还是来构造一个实际应用的场景,比如实体类车辆(Car),它具有以下属性:Id,品牌(brand),车牌(lisencePlate);实体类车牌(LisencePlate),它具有以下属性:Id,号码(number),所属车辆(car)。那么车辆和车牌是一对一的关系,一辆...